There really shouldn't be too much to it. I've run it on old 2.x setups and recently set it up again on 2.4.1

Here are my settings:

Enable BandwidthD should be selected

BandwidthD Interface: LANSubnets for Statistics Collection: Select ALL interfaces (hold down CTRL and click) except your CARP/SYNC interfaceExtra Subnets for Statistics Collection: (Enter other subnets as needed) I have one other.Promiscuous Mode: UncheckedSensorID: <Make up a name of your choosing>